Stationary chemical-mixing eire-extinguisher system



J. .E-NRIGHT;

STATIONARY CHEMICAL MIXING FIRE EXTINGUISHER SYSTEM.

APPLICATION FILED MAR. 10, l9l9.

Patented Oct. 21, 1919.

UNITED STATES PATENT omucr.

JOHN W. :ann-Ierrr, or new oRLEANsfLoUIsIANA.

STATIONARY CHEMICAL-MIXING FIRE EXTINGUISHER- SYSTEM.

Specification of Letters Patent. Patent ed Oct. 21,1919.

Application filed March 10, 1919. Serial No. 281,690.

To all whomz't may concern:

7 Be it known that I, JOHN XV. ENRIGHT, a citizen of the United States of America, residingat New Orleans, in the parish of ()rleans and State of Louisiana,'hzwe invented certainnew and useful Improvements. in Stationary Chemical-Mixing Fire Extinguisher Systems, of which the followinqis a specification.

This invention relates to improvements in stationary chemical mixing fire extinguisher systems. V

The principal object of the invention 1s to provide means of extremely simple and inexpensive structural nature WlHCll shall be certainly and automatically OPQItI-lllVfi' under lire emergency conditions promptly to eii'ect the discharge of acid into the tank which contains the alkaline solution.

An embodiment of the invention is illusstrated in the accompanying drawing wherein the figure is a sectional diagram;

The system includes a tank 1 for analkaline solution from which leads a riser 2', extending throughout the height of the building and forming an element of the d1stributing system, the latter including the usual leaders or laterals 3 which are provided with sprinkler heads or distributing valves 41-.

In the embodiment disclosed and preferred, the acid is contained in an invertible bottle 5 which is arranged within an upward extension 6 of the tank 1 and which is pivoted off center to a bracket 7, the bottle 5 normally resting in stable equilibrium against an adjacent wall of theextenslon 6.

The bottle 5 in the embodiment CllSClO-SBCl has at one side thereof an open receptacle 8 and the over-turning of said bottle is effected by filling the receptacle 8 with the liquid which over-balances the bottle and causes it to fall by gravity into the mverted position shown by dotted lines. In its normal position, the bottle 5 may be closed by a stopper 9 which is connected by a chain 10 to the top of the extension 6 and, as the bottle is over-turned, the stopper 1s disengaged, as will be obvious.

The liquld whlch 1s discharged nto the receptacle 8 is normally contained in a reservoir 11 having in its top a small opening 12 which prevents a vacuum mfluence in said reservoir as the liquid is vented therefrom. The reservoir 11 is connected at its lower end to a pipe 13 which PTOJGBOlZS mto a vessel 14 containing mercury 15; The vessel M is also connected to a pipe 1 6 which leads tothe extension 6' and whose discharge end ahnes with the receptacle 8. In charging the system, the mercury 15 isplaced in the receptacle 14, after which air or gas under pressure is charged into the riser 2 so as to fill thela-terals 3 and also the extension 6 and the space in the tank 1 above the alkalme solution. By virtue of this, a column of mercury is forced up the pipe 13 for a suitable distance, after which the operating liquid, preferably of a non-freezing variety, 1s placed in the reservoir 11 and is held therein by the column of mercury in the pipe 13.

Vl hen a sprinkler head or distributing valve 4; opens at the time of a fire, the air or gas under pressure will, of course, escape and the fall of pressure thus occasioned will resul'tm' the lowermgof the mercury column in the pipe 13' to a point where the liquid in the reservoir 11 will overcome the mercury and flow through the trap and by way of the pipe 16 to the receptacle 8. lVhen the requisite amount of liquid has entered said receptacle, the acid bottle will be overturned, as will be obvious.

What is claimed is 1. A stationary chemical mixing fire extinguisher system comprising a tank for an alkaline solution, an invertible acid bottle, a normally empty liquid receptacle associated with said acid bottle and operable when filledwith a liquid to effect the inversion of the acid bottle and the discharge of the con tents thereof into said tank, a reservoir normally containing said liquid a pipe for conducting the liquid from said reservoir to said receptacle, a mercury trap interposed between said reservoir and said pipe, and a distributing system normally containing a fluid which acts on the mercury in said trap to maintain the trap operative.

2. A stationary chemical mixing fire extinguisher system comprising a tank for an alkaline solution, an invertible acid bottle provided with an open, normally empty, liquid receptacle at one side thereof, a reservoir normally containing liquid, a pipe for conducting the liquid from said reservoir to said receptacle, a mercury trap interposed between said reservoir and said pipe, and a distributing system normally containing a fluid which acts on the mercury in said trap to maintain the trap operative, the said pipe.

liquid when filling said receptacle causing the inversion of the acid bottle and the discharge of the acid into the tank.

3. A stationary chemical mixing fire extinguisher system comprising a tank for an alkaline solution, an invertible acid bottle,

a normally empty liquid receptacle associated with said acid bottle and operable When filled With a liquid to effect the inversion of the acid bottle and the discharge of the contents thereof into said tank, a reservoir normally containing the said liquid, adistributing system normally containing afluid, a pipe to conduct the liquid from said reservoir to said receptacle and means under the control of said fluid for normally maintaining the liquidin said reservoir and preventing the flow of the liquid through said pipe, said means operatingwhen the fluid in said distributing system is vented to permit the floW of said liquid through said 4. A stationary chemical mixing fire extinguisher system comprising a tank for an alkaline solution, an invertible acid bottle provided With an open, normally empty, liquid receptacle at one side thereof, a reservoir normally containing liquid, a pipe for conducting the liquid from said reservoir to said receptacle, a distributing system normally containing a fluid, andmeans under the control of said fluid for normally main taining the liquid in said reservoir and preventing the flow of the liquid through said pipe, said means operating when the fluid in said distributing system is vented to permit the flow of said liquid through said pipe, and said liquid, when filling said receptacle, causing the inversion of the acid bottle and the discharge of the acid into the tank.

5. A stationary'chemical mixing fire extinguisher systen comprising a tank for an alkaline solution, an invertible acid bottle, a normally empty liquid receptacle associated With said acid bottle and operable When filled with a liquid to effect the inversion of the acid bottle and the discharge ofthe contents thereof into said tank, a reservoir'normally containing said liquid, a pipe for conducting the liquid from said reservoir to said receptacle, a mercury trap interposed between said reservoir and said pipe, anda dry-pipe distributing system normally con taining air or gas which acts on'the mercury in said trap to maintain the trap operative. In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

' JOHN W. ENRIGHT. Witnesses:

WILLIAM J. EVANS, L. J. COOK.

Copies 0! this patent may be obtained for live cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

